Barahona received a bachelor's degree in software engineering, at Madrid's Polytechnic University.
He went to work as computer programmer and systems analyst in videogames, telecommunications and banking for large companies.
In 1996, Barahona learned more about using Avid as a non-linear editing tool, and redirected his professional career towards editing in the world of advertising, collaborating with production companies such as 'Molinare', 'Dalton's Digital Brothers', 'Videospot', 'Full Fiction', 'Escosura', 'Videoreport', 'Propaganda Moviebox', 'Viva Video', 'Alaska Producciones', 'Genlock videoproducciones', 'Exa', '101', 'Telson', 'Resonancia Madrid', 'Com 4 hd' or 'Iconica'.
In 1998, he came into contact with TV fiction through the production company Globomedia (market leader in South America and second in Europe), and developed his career as a cinematographic editor, working on several of the most successful primetime Spanish TV series such as '7 vidas (Telecinco)', 'Javier ya no vive solo' (Telecinco), 'Los Serrano' (Telecinco), 'Compañeros (Antena 3)' and 'Policías, en el corazón de la calle' (Antena 3).
In 2004 he was signed up with the production company Videomedia to work on 'Lobos' (Antena 3) and 'Hospital Central' (Telecinco).